Singh, D. P. H., D. N. Rati Devi, and D. N. S. Singh. “Comparison Between Accuracy of Two Different Electronic Apex Locators in Determining Working Length of Root Canals: An In Vitro Study”. International Journal Of Drug Research And Dental Science, Vol. 2, no. 1, Mar. 2020, pp. 14-17, doi:10.36437/ijdrd.2020.2.1.L.